Battery charger



FIG. 1 is a perspective view of the present invention;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left elevational view thereof; and,

FIG. 7 is a right elevational view thereof.

The broken line showing in FIG. 1 is included for the purpose of illustrating environmental structure only and forms no part of the claimed design. 

The ornamental design for a battery charger, as shown and described. 